Among field troops in Vietnam it became common knowledge that ingestion of a small amount of C-4 would produce a "high" similar to that of ethanol. Others would ingest C-4, commonly obtained from a Claymore mine, to induce temporary illness in the hope of being sent on sick leave.
I mean, if you don't use the primer as the hammer face, it'll be ok aside from the fact that they don't weigh enough to drive in a pin/nail. I'd try the bullet tbh, it'll be the heaviest part, but you'll really probably need at least like a, idk, 8oz impliment, and one round of .50bmg is about 1.5oz.